"to trim, to dress up," late 14c., perhaps a variation of Middle English proynen, proinen "trim the feather with the beak" (see prune (v.)); or perhaps from Old French poroindre "anoint before," and Old French proignier "round off, prune." Middle English prene (from Old English preon, a general Germanic word) meant "to pin," and probably influenced the form of this word. Watkins, however, connects it with Latin unguere "to smear, anoint."

Because of the popularity of falconry, bird activities formerly were more closely observed and words for them were more precise in English than today.

Youre hawke proynith and not pikith and she prenyth not bot whan she begynnyth at hir leggys, and fetcheth moystour like oyle at hir taill. ["Book of St. Albans," 1486]

mid-14c., "civil or military official," from Old French prefect (12c., Modern French préfet) and directly from Latin praefectus "public overseer, superintendent, director," noun use of past participle of praeficere "to put in front, to set over, put in authority," from prae "in front, before" (see pre-) + combining form of facere "to make, to do" (from PIE root *dhe- "to set, put"). Spelling restored from Middle English prefet. Meaning "administrative head of the Paris police" is from 1800; meaning "senior pupil designated to keep order in an English school" is from 1864. Related: Prefectorial.

late 14c., "to put forward or advance in rank or fortune, to promote," from Old French preferer (14c.) and directly from Latin praeferre "place or set before, carry in front," from prae "before" (see pre-) + ferre "to carry, to bear," from PIE root *bher- (1) "to carry," also "to bear children." Meaning "to esteem (something) more than others" also is recorded from late 14c. Original sense in English is preserved in preferment.

mid-15c., "advancement in position or status;" 1650s as "act of prefering," from Middle French preference (14c., Modern French préférence), from Medieval Latin preferentia, from past participle stem of Latin praeferrere (see prefer). Sense of "that which one prefers" is from 1852.

early 15c., "appoint beforehand," from Middle French prefixer, from pre- "before" (see pre-) + fixer (see fix (v.)). Meaning "to place at the beginning" is from 1530s; of words or parts of words from c. 1600. Related: Prefixed; prefixing.

Retained its status as a taboo word until c. 1950; modern euphemisms include anticipating, enceinte, expecting, in a family way, in a delicate (or interesting) condition. Old English terms included mid-bearne, literally "with child;" bearn-eaca, literally "child-adding" or "child-increasing;" and geacnod "increased." Among c. 1800 slang terms for "pregnant" was poisoned (in reference to the swelling).

Latin -hendere perhaps is related to hedera "ivy," via the notion of "clinging." De Vaan writes, "Of course, ivy is a climbing (or ground-creeping) plant, and one may surmise that its name means 'the grabbing one', but this is just a guess, especially since the morphology is uncommon: no s-stem of this root is attested elsewhere in IE."